Question

Evaluate the expression for the given value of the variable. $$3 x^{2} \text { when } x=7$$

Short answer

The evaluated expression for \(x=7\) in \(3x^2\) gives the result 147.

Step-by-step solution

Substitute the Given Value

Replace \(x\) in the expression \(3x^2\) with the given value. This results in the new expression \(3 \times 7^2\).

Simplify Exponent Expression

Simplify \(7^2\) to get 49. This changes the expression into \(3 \times 49\).

Perform Multiplication

Now, multiply 3 and 49 together. The result is 147.